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Rifles, Reloading, Optics, Equipment
Reloading
SD how many rounds.
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<blockquote data-quote="Bart B" data-source="post: 108979" data-attributes="member: 5302"><p>[ QUOTE ]</p><p>Please explain. (regarding my comment: You'll have a more statistically realistic (correct) group if you shoot one 50-shot group than ten 5-shot ones.) </p><p></p><p>[/ QUOTE ]The center of a 50-shot group will not be at the same place as the centers of any one of ten 5-shot groups. That 50-shot group center more closely represents the center of all shots fired; past, present and future.</p><p></p><p>Arsenals calculate group center from several dozen shot holes for military ammo; some groups have 200 to 300 shots. Then they calculate the group center based on the average vertical and horizontal shot hole position. That plotted group center is then used to calculate the radius of each shot from group center then the get the mean radius for that ammo lot. Mean radius is probably the best way to determine accuracy, but it takes a bunch of ammo to do it with a high level of confidence that it's correct.</p></blockquote><p></p>
[QUOTE="Bart B, post: 108979, member: 5302"] [ QUOTE ] Please explain. (regarding my comment: You'll have a more statistically realistic (correct) group if you shoot one 50-shot group than ten 5-shot ones.) [/ QUOTE ]The center of a 50-shot group will not be at the same place as the centers of any one of ten 5-shot groups. That 50-shot group center more closely represents the center of all shots fired; past, present and future. Arsenals calculate group center from several dozen shot holes for military ammo; some groups have 200 to 300 shots. Then they calculate the group center based on the average vertical and horizontal shot hole position. That plotted group center is then used to calculate the radius of each shot from group center then the get the mean radius for that ammo lot. Mean radius is probably the best way to determine accuracy, but it takes a bunch of ammo to do it with a high level of confidence that it's correct. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
SD how many rounds.
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